Use sequence<T> instead of T[] where possible and document exceptions

third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.idl

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // https://webbluetoothchrome.github.io/web-bluetooth/#idl-def-bluetoothdevice
 
 // Implement BluetoothDevice interface: http://crbug.com/421668
 
 [
     DependentLifetime,
     OriginTrialEnabled=WebBluetooth,
 ] interface BluetoothDevice : EventTarget
 // Implement ServiceEventHandlers interface: http://crbug.com/421670
 // : ServiceEventHandlers
 {
 // Implement BluetoothDevice interface: http://crbug.com/421668
     readonly    attribute DOMString id;
     readonly    attribute DOMString?                 name;
     readonly    attribute BluetoothRemoteGATTServer  gatt;
+    // TODO(jyasskin): |uuids| was FrozenArray<UUID>, now removed:
+    // https://github.com/WebBluetoothCG/web-bluetooth/pull/292
     readonly    attribute UUID[]                     uuids;
 
     attribute EventHandler ongattserverdisconnected;
 };